Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: PSU max limit advice ?

23 Mar 2010   #1

Windows 7 Ultimate x64
PSU max limit advice ?

Hi folks,

Not long ago I assembled a nice PC semi-monster. I chose a good and reliable PSU because i use a lot of hard drives, midi controller via usb, other usb devices, a few phones from time to time (also via USB) and an audio interface (Presonus) via Firewire... Some of my hard drives are powered by USB, some are not, the rest is usb-power only.
My problem/question is - Will i need a better PSU since I'm planning to install 2 more usb-powered midi controllers (my choice for now is again Emu Xboard 61), 2 more WD usb powered hdds and a second external audio interface... if possible.

My PSU at the moment is 1100W if I remember correct.

My System SpecsSystem Spec
23 Mar 2010   #2

Windows 7 Professional x64

1100 Watts is very powerful. I wouldn't suspect you'd need anything more than that.

I have a 430w PSU, and while I am wondering if a 500w might be a better idea, the bottom line is I have not had any problems.
My System SpecsSystem Spec
23 Mar 2010   #3


It's not the total wattage that counts, it's the amps per rail that is important.

That PSU has 6 12v rails with 12v1 and 12v2 rated at 22a each and the other 4 rails at 20 amps. USB/SATA devices don't use a lot of power individually.

However, try to distribute the load evenly across the rails so you aren't overloading any particular rail.
My System SpecsSystem Spec


 PSU max limit advice ?

Thread Tools

Similar help and support threads
Thread Forum
MTU Limit - Test and change your connection's MTU limit
An MTU limit that is set too high can cause fragmented packets and packet loss on your connection. This tutorial will explain how to test if your MTU limit is sending fragmented packets and will explain how to find what value you should be using. 1) Open an elevated command prompt and type: ...
What will be the limit?
In terms of game requirements, and how demanding they are. What would a game need to do in order to increase it's demands to the system past.. lets say.. A GTX Titan, or an HD7970? It seems those cards can pretty much obliterate any game. But what about games? What would a game need to have...
cd key limit on 1 pc
HELlo, i have a system with ligit windows on which i was gettin a blue screen error so i reinstalled windows on the same computer so far i havent made mine legit so can i enter the same key on my same system? p.s. how many times can use my key on the same system?
Windows Updates & Activation
Is there a TCP limit?
The resource monitor has been showing low, constant numbers of connections even with moderate bittorrent activity (>1mpbs). Are there are built-in limits on any type of TCP connection?
Network & Sharing

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 02:03.
Twitter Facebook Google+